Biology 1002B Chapter Notes -Gene Duplication, Chlamydomonas, Multicellular Organism

• School: Western University
• Department: Biology
• Course: Biology 1002B
• Professor: Tom Haffie

Document Summary

Genome size or total number of genes in an organism. Gene (copy) number or number of copies of a gene in a given gene family resulting from gene duplication. Increase in the size of organisms over the course of evolution. Number of parts or units in an organism (parts might be segments, organs, tissues ) Number of cell types possessed by an organism. Increased compartmentalization specialization, or subdivision of function over the course of evolution. Number of gene, gene networks or cell-to-cell interactions required to form the parts of an organism. Number of interactions between the parts of an organism, reflecting increasing functional complexity and/or integration over the course of evolution. Mostly seen in animal embryonic development, transformation from a single- celled zygote to a multicellular organism. Most commonly used metric of complexity is the number of different types of cells possessed by an organism. Number of cell types has increased through evolution. Embryonic development is accompanied by increasing size.